Yamaha WR450F(Y) 2009 Owner's Service Manual page 41

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CHASSIS
△ - marked portion shall be checked for torque tightening after break-in or before each race.
Part to be tightened
Upper bracket and outer tube
Lower bracket and outer tube
Upper bracket and steering stem
Handlebar holder (upper)
Handlebar holder (lower)
Steering ring nut
Front fork and cap bolt
Front fork and base valve
Cap bolt and damper rod (front fork)
Bleed screw (front fork) and cap bolt
Front fork and protector
Front fork protector and brake hose holder
Throttle cable cap
Clutch lever holder mounting
Clutch lever mounting
Hot starter lever holder mounting
Hot starter lever mounting
Front brake master cylinder and bracket
Front brake master cylinder cap
Brake lever mounting (bolt)
Brake lever mounting (nut)
Brake lever position locknut
Hose guide (front brake hose) and hose guide bracket
Hose guide (front brake hose) and under bracket
Front brake hose union bolt (master cylinder)
Front brake hose union bolt (caliper)
Front brake caliper and front fork
Front brake caliper and brake hose holder
Brake caliper (front and rear) and pad pin plug
Brake caliper (front and rear) and pad pin
Brake caliper (front and rear) and bleed screw
Front wheel axle and nut
Front wheel axle holder
Front brake disc and wheel hub
Rear brake disc and wheel hub
Brake pedal mounting
Rear brake master cylinder and frame
Rear brake master cylinder cap
Rear brake hose union bolt (caliper)
Rear brake hose union bolt (master cylinder)
Rear wheel axle and nut
TIGHTENING TORQUES
Thread size
Q'ty
M8 × 1.25
M8 × 1.25
M24 × 1.0
M8 × 1.25
M12 × 1.25
M28 × 1.0
M51 × 1.5
M30 × 1.0
M12 × 1.25
M5 × 0.8
M6 × 1.0
M6 × 1.0
M5 × 0.8
M5 × 0.8
M6 × 1.0
M5 × 0.8
M5 × 0.8
M6 × 1.0
M4 × 0.7
M6 × 1.0
M6 × 1.0
M6 × 1.0
M5 × 0.8
M6 ×1.0
M10 × 1.25
M10 × 1.25
M8 × 1.25
M6 × 1.0
M10 × 1.0
M10 × 1.0
M8 × 1.25
M16 × 1.5
M8 × 1.25
M6 × 1.0
M6 × 1.0
M8 × 1.25
M6 × 1.0
M4 × 0.7
M10 × 1.25
M10 × 1.25
M20 × 1.5
2-14
Tightening torque
Nm
m•kg
4
21
2.1
4
21
2.1
1
145
14.5
4
28
2.8
2
34
3.4
1
Refer to TIP.
2
30
3.0
2
55
5.5
2
29
2.9
2
1
0.1
6
7
0.7
2
7
0.7
2
4
0.4
2
4
0.4
1
4
0.4
2
4
0.4
1
2
0.2
2
9
0.9
2
2
0.2
1
6
0.6
1
6
0.6
1
5
0.5
1
4
0.4
1
4
0.4
1
30
3.0
1
30
3.0
2
23
2.3
1
10
1.0
2
3
0.3
2
18
1.8
2
6
0.6
1
90
9.0
4
21
2.1
6
12
1.2
6
14
1.4
1
26
2.6
2
10
1.0
2
2
0.2
1
30
3.0
1
30
3.0
1
125
12.5
ft•lb
15
15
105
20
24
22
40
21
0.7
5.1
5.1
2.9
2.9
2.9
2.9
1.4
6.5
1.4
4.3
4.3
3.6
2.9
2.9
22
22
17
7.2
2.2
13
4.3
65
15
8.7
10
19
7.2
1.4
22
22
90

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